1985-1998 [Subscribe to Daily Digest] |
 | [Main 9000 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Some questions Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Wed, 25 Oct 2006 08:17:59
In Reply to: Motor mounts, Ron, Tue, 24 Oct 2006 19:24:17 Members do not see ads below this line. - Help Keep This Site Online - Signup |
First - automatic or manual tranny?
Second - which mounts did you replace - both lowers and both uppers, just the uppers, etc.
Third - what source for the mounts. For the lowers, did you go with stock hydraulic, or solid mounts? For the uppers, did you go stock rubber, or aftermarket poly?
Fourth - if the upper mounts were changed - how are the bushings oriented? If you look at the stock rubber upper mounts, there is a rubber center connected to the outside via two 'ribs'. There are two open areas. Ideally, the open areas should be front and back, and the ribs should be up and down for the front mount, and side to side on the rear mount. Huh? Basically, the upper mounts are more compliant in one direction than the other. You get the most movement, and therefore the most damping if the vibration is in the direction of the openings in the mounts. Most engine vibration is front-to-back, so you want to line up the openings in that direction.
Each engine is different, and some vibrate more than others. If you went to solid lower mounts or poly upper mounts, those transmit more vibration than stock hydraulic lowers/rubber uppers. If your engine is a little more prone to vibration, staying stock can only help. It is my impression that the aftermarket upper mount inserts are harder plastic, and transmit more vibration.
posted by 192.249....
, Wed, 25 Oct 2006 08:17:59 <-- Viewing This Message, Thu, 26 Oct 2006 06:15:21, Tue, 31 Oct 2006 04:52:31
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
 |
 |
 |
 |
 |
